(19)

(11)

EP 2 640 179 A1

(12)

(43) Date of publication: 25.09.2013 Bulletin 2013/39 (21) Application number: 11799330.3 (22) Date of filing: 18.11.2011

(51) International Patent Classification (IPC):  A01G 1/04(2006.01) (86) International application number: PCT/IB2011/055183 (87) International publication number: WO 2012/066511 (24.05.2012 Gazette 2012/21)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 19.11.2010 ZA 201008305 (71) Applicant: University of Pretoria 0002 Pretoria (ZA)	(72) Inventors: MEYER, Linda 0181 Pretoria (ZA) VAN HEERDEN, Ané 0182 Pretoria (ZA) KORSTEN, Lise 0054 Pretoria (ZA) (74) Representative: Bates, Philip Ian  Reddie & Grose LLP 16 Theobalds Road London WC1X 8PL London WC1X 8PL (GB)